Alexandee c



PA TENTED MAE. 1, 1904.

A. O. GALDERWOOD.

TROLLEY. APPLICATION FiLBD AUG. e, 1903.

NO MODEL.

UNITED STATES Patented March 1, 1904. 1

ALEXANDER G. CALDERWOOD, OF GLOVERSVILLE, NEW YORK.

TROLLEY,

SPECIFICATION forming part of Letters Patent No. 753,542, dated March 1,1904.

Application filed A g s, 1903.

To all whom it may concern:

Be it known that I, ALEXANDER C. CALDER- wooD, a citizen of the UnitedStates, residing at Gloversville, in the county of Fulton and State ofNew York, have invented certain new and useful Improvements in Trolleys,of which the following is a specification.

This invention is designed to maintain proper relation of a trolley uponthe line-wire and to automatically replace the same when from any causeit leaves the line, thereby obviating the annoyance, loss of time, andhazardness usually attendant upon the replacement of the trolley when itbecomes necessary while the car is in motion.

This invention combines with the trolley a replacer normally held out ofthe way, means cooperating with the replacer to throw it into positionfor returning the trolley to the line should it become displaced, and atrip mechanism so related as to be engaged by the line wire upondisplacement of the trolley to liberate the replacer, whereby thetrolley is again returned to the line. Inasmuch as the replacer has tobe reset by hand, an alarm, signal, or like contrivance is actuated whenthe replacer is operated to give Warning that the automatictrolley-actuating means have been actuated, thereby enabling the partsto be returned to a normal position, so as to avoid ill results.

For a full description of the invention and the merits thereof and alsoto acquire a knowledge of the details of construction of the means foreffecting the result reference is to be had to the following descriptionand drawings hereto attached.

While the essential and characteristic features of the invention aresusceptible of modification, still the preferred embodiment of theinvention is illustrated in the accompanying drawings, in which Figure 1is a perspective view of a trolleyharp equipped with a trolley replacerembodying the invention. Fig. 2 is a vertical longitudinal section ofthe harp, pole, and the upper portion of the car, illustrating theinvention in operative position, a portion of the trolley-pole beingbroken away. Fig. 3 is a and may be of any structural type.

Serial ND. 168,509. on model.)

front view of the harp. Fig. Lis a perspective view of the replacerdetached from the harp. Corresponding and like parts are referred toin'the following description and indicated in all the views of thedrawings by the same reference characters. f

The trolley-harp 1 is secured to the upper end of the trolley pole 2 inany approved way The trolley-wheel 3 is journaled upon the axle orspindle 4, secured at its ends to the side members of the harp 1. Arodor bar 5 passes through the pole and harp'and is acted upon by a spring6, which normally tends to move the rodupward or toward thetrolley-wheel. A cable or other flexible connection 7 is secured to the6 5 lower end of the rod or bar 5 and passes through the spindle 8,about which the trolley-pole turns when swung from one position toanother. Operating-cords or like connec: tions 9 are united to the lowerend of the flexible connection 7 and extend within convenient reach, soas to be drawn upon to reset the replacer after being actuated. Theoperating connections 9 are secured bya swivel connection 10 to theflexible connections 7, so as to admit of the turning of said connectionwith the trolley-pole without producing torsional strain thereon. Aguide-pulley 11 is located at the upper end of the spindle 8, and otherguide-pulleys 12 and 13 are provided for-the operating connections 9.The turn-table 14 is mounted upon the spindle 8 and base thereof, andthe lower end of the trolley-pole is pivoted thereto in the usualmanner. The

mountings for the trolley-pole may be of any 8 structural type so longas provision is had for passage of the connection 7 through the vertical axisto admit of resetting the replacer. A nut 15 is threaded inthe lower end of the pole 2 and forms a guide for the rod 5, and the 9spiral spring 6, mounted upon the rod 5, is confined between the nut 15and the collar 16, secured to the rod 5 a short distance from the nut15; The spring 6 is of the expansible' type.

The replacer comprises side members 17, which are pivotally mounted uponthe axle 4 intermediate of their ends. A yoke 18 C011? meets the lowerends of the side members 17 to cause them to move as one part, and thisyoke may form a part of or be independent of the members 17, as foundmost advantageous in the construction of the device. A link 19{)iivotally connects the yoke 18 with the rod or ar 5. 17 curvelongitudinally and flare outwardly, the latter feature presenting a widerange for gathering or guiding the trolley when it becomes necessary toreplace the same. The longitudinal curvature of the upper ends of themembers 17 is such as to throw them below the line-wire 20, so as not tocome in contact with a cross-line, support, or other part approachingthe line 20 from above. In the normal position of the replacer, as shownin Fig. 2, the link 19 is in line with the rod or bar 5, and the lowerstraight portions of the members 17 and the pivotal connection of saidlink with the replacer is in line with or slightly above a straight linepassed through the centers of the axle 4: and pivotal connection of thelink 19 with the rod 5, thereby forming, in eifect, a lock-joint.

The trolley-finder or trip device consists of a flat spring 21, securedat its lower end to the harp 1 and having its upper portion forked, soas to embrace opposite sides of the trolleywheel, the terminal portionsof the fork members being upturned, as shown at 22, to prevent lateralslipping of the finder from the line-wire when coming in contacttherewith, as when the trolley becomes displaced. A pro jection 23extends from the side of the spring 21 adjacent to the harp and comesopposite the pivot-joint between the link '19 and the replacer. finderor spring 21 normally stands away from the harp, and a pressure thereonfrom above brings the projection 23 in contact with the joint formedbetween the parts 19 and 17, whereby the same is caused to breakdownward and the replacer moved to a position to throw the curvedextensions into an approximately vertical position, so as to catch theline-wire and guide the trolley-wheel upon the same. A pull upon eitherone of the operating connections 9 serves to reset the replacer, wherebythe end portions projected vertically are turned down out of the way andthe device returned to a normal position for automatic operation inreplacing the trolley the next time the same leaves the linewire. Whenthe free end of the finder or trip is depressed by coming in contactwith the line-wire and the joint between the parts 17 and 19 is brokendownward, the spring 6 throws the rod 5 upward, thereby drawing 'uponthe parts 7 and 9 In order that either the conductor or motorman, orboth, may be apprised of the operation of the resetting mechanism, asignal, alarm, or like contrivance is provided and arranged so as to beactuated by one of the connections The upper ends of the side membersThe upper or outer portion of the- 9. As shown, a gong 24 is applied tothe car or other supporting structure, and a trip 25,

secured to the part 9, is adapted in the operation thereof to effect asounding of the alarm by striking the hammer or other part thereof. Thecurved portions of the side members 17 are connected by a tie 26, so asto strengthen and brace the same. of a loop and is longitudinally curvedto conform to the peripheral grooved portion of the trolley-wheel. Thisperforms another important ofiice-namely, to direct the line-wire intothe grooved edge of the trolley-wheel and to preventcatching of the sameupon the flanges or rim portions at the side of the groove. The tie orloop is of such relative length as to prevent the closed end coming incontact with the line-wire at any position of the replacer. It is to beunderstood that the replacer has a limited movement in each direction,the same beingdetermined upon in the construction of the device.

Having thus described the invention, what is claimed as new is- 1. In atrolley, a pivotally-mounted replacer normally held out of actionagainst a force tending to throw the same into a working position, and atrip device actuated by contact with the line-wire to effect a releaseof the replacer whereby it assumes an operative position and effectsautomatic return of the trolley to the line-wire, substantially as setforth.

2. In a trolley, the combination of a pivotally-mounted replacer, alongitudinally-movable rod or bar, a link connection between said rodand the replacer adapted inone position to hold the replacer out ofoperative position, a spring normally exerting a pressure upon the saidrod to move it longitudinally to throw the replacer into workingposition, and a trip device for breaking the joint between the replacerand link connection, substantially as set forth.

3. In a trolley, the combination of a replacer This tie is in the form"mounted for pivotal movement, a longitudinallymovable spring-actuatedrod or bar, a link connection between said rod. or bar and the replacerand adapted to aline with said spring-actuated rod and replacer, and aspringactuated trip device adapted to be operated by contact with theline-wire to break joint between the replacer and link cooperatingtherewith to permit automatic operation in returning the trolley to theline-wire, substantially as set forth.

4:. In a trolley, a pivoted replacer comprising side members havingtheir upper end portions longitudinally curved and outwardly flared, anda tie connecting the curved end portions of said members, said tie beingof loop form and longitudinally curved, substantially as set forth.

5. In a trolley, the combination of a pivoted replacer, aspring-actuated rod or bar having link connection therewith, a tripdevice adapted to be actuated by contact with the linewire to eflectrelease of the replacer to permit movement of the same into operativeposition, and a connection extended within convenient reach and passedthrough the pivotal mounting of the trolley-pole to admit of resettingor returning the replacer to a normal position after being actuated,substantially as described.

6. In a trolley, the combination of a pivoted replacer, aspring-actuated rod or bar having link connection therewith, a tripdevice, a flexible connection passed through the pivotal mounting of thetrolley-pole and secured to the said spring-actuated rod or bar, and anoperating connection extended within conven- ALEXANDER 0. OALDERWOOD.

Witnesses:

F. E. MoYER, W B. VAN VLIET.

